malvin 0.1.3

Non-interactive CLI agent, via Cursor ACP
Documentation
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mod common;

#[cfg(unix)]
use std::process::Command;

#[cfg(unix)]
use common::{
    MALVIN_TEST_CMD_TIMEOUT, acp_mock_do_streaming_long_agent_msg_js,
    acp_mock_do_streaming_update_js, acp_mock_do_streaming_wordy_long_msg_js,
    acp_mock_do_creates_grounding_and_kissconfig_js, acp_mock_do_tamper_grounding_and_kissconfig_js,
    acp_mock_do_tampers_grounding_js, command_output_with_timeout, test_home_workspace,
    write_mock_executable,
};
#[cfg(unix)]
use malvin::config::DEFAULT_CLI_MODEL;

#[cfg(unix)]
const DO_WRAP_COLUMNS: &str = "32";

#[cfg(unix)]
fn run_do_with_named_mock_bin(
    mock_bin_name: &str,
    mock_js: &str,
    extra_args: &[&str],
    columns: Option<&str>,
) -> (
    std::process::Output,
    tempfile::TempDir,
    std::path::PathBuf,
) {
    let (root, home, workspace) = test_home_workspace();
    let mock = root.path().join(mock_bin_name);
    write_mock_executable(&mock, mock_js);
    let mut args = vec!["do"];
    args.extend_from_slice(extra_args);
    args.push("say hi");
    let mut cmd = Command::new(env!("CARGO_BIN_EXE_malvin"));
    cmd.current_dir(&workspace)
        .env("HOME", &home)
        .env("CURSOR_AGENT_API_KEY", "test-key")
        .env("MALVIN_AGENT_ACP_BIN", &mock);
    if let Some(c) = columns {
        cmd.env("COLUMNS", c);
    }
    cmd.args(args);
    let out = command_output_with_timeout(&mut cmd, MALVIN_TEST_CMD_TIMEOUT).expect("spawn malvin do");
    (out, root, workspace)
}

#[cfg(unix)]
fn run_do_with_mock_js(
    mock_js: &str,
    extra_args: &[&str],
    columns: Option<&str>,
) -> std::process::Output {
    let (out, root, _) = run_do_with_named_mock_bin("mock-agent-acp-do", mock_js, extra_args, columns);
    drop(root);
    out
}

#[cfg(unix)]
fn run_do_with_mock(extra_args: &[&str]) -> std::process::Output {
    run_do_with_mock_js(&acp_mock_do_streaming_update_js(), extra_args, None)
}

#[cfg(unix)]
fn run_do_with_columns_mock(mock_js: &str, extra_args: &[&str]) -> std::process::Output {
    run_do_with_mock_js(mock_js, extra_args, Some(DO_WRAP_COLUMNS))
}

#[cfg(unix)]
fn run_do_long_text_mock(extra_args: &[&str]) -> std::process::Output {
    run_do_with_columns_mock(&acp_mock_do_streaming_long_agent_msg_js(), extra_args)
}

#[cfg(unix)]
fn run_do_wordy_long_mock(extra_args: &[&str]) -> std::process::Output {
    run_do_with_columns_mock(&acp_mock_do_streaming_wordy_long_msg_js(), extra_args)
}

#[cfg(unix)]
fn run_do_with_mock_and_argv(extra_args: &[&str]) -> (std::process::Output, Vec<String>) {
    let mut args: Vec<&str> = vec!["do"];
    args.extend_from_slice(extra_args);
    args.push("say hi");
    run_malvin_with_captured_argv(&args)
}

#[cfg(unix)]
fn run_malvin_with_captured_argv(malvin_args: &[&str]) -> (std::process::Output, Vec<String>) {
    let (root, home, workspace) = test_home_workspace();
    let capture = root.path().join("captured-argv.txt");
    let mock = root.path().join("mock-agent-acp-do");
    write_mock_executable(&mock, &acp_mock_do_streaming_update_js());
    let out = command_output_with_timeout(
        Command::new(env!("CARGO_BIN_EXE_malvin"))
            .current_dir(&workspace)
            .env("HOME", &home)
            .env("CURSOR_AGENT_API_KEY", "test-key")
            .env("MALVIN_AGENT_ACP_BIN", &mock)
            .env("MALVIN_CAPTURE_ARGS_PATH", &capture)
            .args(malvin_args),
        MALVIN_TEST_CMD_TIMEOUT,
    )
    .expect("spawn malvin");
    let captured_args = std::fs::read_to_string(&capture)
        .unwrap_or_default()
        .lines()
        .map(std::string::ToString::to_string)
        .collect();
    (out, captured_args)
}

#[cfg(unix)]
fn stdout_lines_preserve_shape(stdout: &[u8]) -> Vec<String> {
    String::from_utf8_lossy(stdout)
        .split('\n')
        .map(|line| line.trim_end_matches('\r').to_string())
        .collect()
}

#[cfg(unix)]
fn nonempty_stdout_lines(stdout: &[u8]) -> Vec<String> {
    stdout_lines_preserve_shape(stdout)
        .into_iter()
        .filter(|l| !l.is_empty())
        .collect()
}

#[cfg(unix)]
fn first_do_log_path(workspace: &std::path::Path) -> std::path::PathBuf {
    let sub = std::fs::read_dir(workspace.join("_malvin"))
        .expect("_malvin")
        .flatten()
        .find(|e| e.path().is_dir())
        .expect("run dir");
    sub.path().join("do.log")
}

#[cfg(unix)]
fn assert_stdout_has_no_chrome(lines: &[String]) {
    assert!(
        lines
            .iter()
            .all(|l| !l.contains("Command: ") && !l.contains("Logs: ") && !l.contains("TIMING: ")),
        "expected do stdout without startup/timing chrome, got {lines:?}"
    );
    assert!(
        lines.iter().all(|l| !l.contains("]: DONE")),
        "expected do stdout without DONE chrome, got {lines:?}"
    );
}

#[cfg(unix)]
#[test]
fn do_restores_workspace_grounding_after_mock_agent_overwrites() {
    let (out, _root, workspace) = run_do_with_named_mock_bin(
        "mock-agent-acp-do-grounding",
        &acp_mock_do_tampers_grounding_js(),
        &[],
        None,
    );
    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    let restored = std::fs::read_to_string(workspace.join("grounding.md")).expect("read grounding");
    assert_eq!(restored, "x");
}

#[cfg(unix)]
#[test]
fn do_restores_missing_grounding_and_kissconfig_when_agent_creates_them() {
    let (root, _home, workspace) = test_home_workspace();
    let _ = std::fs::remove_file(workspace.join("grounding.md"));
    let mock = root.path().join("mock-agent-acp-do-create-protected");
    common::write_mock_executable(
        &mock,
        &acp_mock_do_creates_grounding_and_kissconfig_js(),
    );
    let out = command_output_with_timeout(
        Command::new(env!("CARGO_BIN_EXE_malvin"))
            .current_dir(&workspace)
            .env("HOME", root.path().join("home"))
            .env("CURSOR_AGENT_API_KEY", "test-key")
            .env("MALVIN_AGENT_ACP_BIN", &mock)
            .args(["do", "say hi"]),
        MALVIN_TEST_CMD_TIMEOUT,
    )
    .expect("spawn malvin do");
    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    assert_eq!(
        std::fs::read_to_string(workspace.join("grounding.md")).expect("read grounding"),
        "CREATED"
    );
    assert_eq!(
        std::fs::read_to_string(workspace.join(".kissconfig")).expect("read kissconfig"),
        "CREATED"
    );
}

#[cfg(unix)]
#[test]
fn do_restores_kissconfig_when_grounding_missing() {
    let (root, _home, workspace) = test_home_workspace();
    std::fs::write(workspace.join(".kissconfig"), "k\n",).expect("write kissconfig");
    let _ = std::fs::remove_file(workspace.join("grounding.md"));
    let mock = root.path().join("mock-agent-acp-do-tamper-kiss");
    common::write_mock_executable(
        &mock,
        &acp_mock_do_tamper_grounding_and_kissconfig_js(),
    );
    let out = command_output_with_timeout(
        Command::new(env!("CARGO_BIN_EXE_malvin"))
            .current_dir(&workspace)
            .env("HOME", root.path().join("home"))
            .env("CURSOR_AGENT_API_KEY", "test-key")
            .env("MALVIN_AGENT_ACP_BIN", &mock)
            .args(["do", "say hi"]),
        MALVIN_TEST_CMD_TIMEOUT,
    )
    .expect("spawn malvin do");
    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    let restored = std::fs::read_to_string(workspace.join(".kissconfig")).expect("read kissconfig");
    assert_eq!(restored, "k\n");
    assert_eq!(
        std::fs::read_to_string(workspace.join("grounding.md")).expect("read grounding"),
        "TAMPERED"
    );
}

#[cfg(unix)]
#[test]
fn do_stdout_shows_plain_output_without_jsonrpc_lines() {
    let out = run_do_with_mock(&[]);
    assert!(out.status.success(), "malvin do failed: {out:?}");
    let stdout = String::from_utf8_lossy(&out.stdout);
    let lines = stdout_lines_preserve_shape(&out.stdout);
    assert!(
        lines.iter().any(|l| l == "agent message"),
        "expected raw agent line, got {lines:?}"
    );
    assert_stdout_has_no_chrome(&lines);
    assert!(!stdout.contains("hidden thought"), "stdout was {stdout:?}");
    assert!(!stdout.contains("\"jsonrpc\""), "stdout was {stdout:?}");
}

#[cfg(unix)]
#[test]
fn do_trace_log_contains_thought_when_hidden_from_stdout() {
    let (out, _root, workspace) = run_do_with_named_mock_bin(
        "mock-agent-acp-do",
        &acp_mock_do_streaming_update_js(),
        &[],
        None,
    );
    assert!(out.status.success(), "{out:?}");
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(
        !stdout.contains("hidden thought"),
        "default do should hide thought on stdout: {stdout:?}"
    );
    let log_path = first_do_log_path(&workspace);
    let log = std::fs::read_to_string(&log_path).expect("do.log");
    assert!(
        log.contains("hidden thought"),
        "trace log should retain thought text; path={log_path:?}"
    );
}

#[cfg(unix)]
#[test]
fn do_repo_gates_keeps_gate_diagnostics_off_stdout() {
    let out = run_do_with_mock(&["--repo-gates"]);
    assert!(
        out.status.success(),
        "malvin do --repo-gates failed: {out:?}"
    );
    let stdout = String::from_utf8_lossy(&out.stdout);
    let lines = stdout_lines_preserve_shape(&out.stdout);
    assert!(lines.iter().any(|l| l == "agent message"), "got: {lines:?}");
    assert!(
        lines.iter().all(|l| !l.contains(":[malvin]:")),
        "did not expect tagged repo-gate stdout lines, got: {lines:?}"
    );
    assert!(!stdout.contains("\"jsonrpc\""), "stdout was {stdout:?}");
}

#[cfg(unix)]
#[test]
fn do_auto_runs_kiss_clamp_by_default_when_source_exists_and_kissconfig_missing() {
    let (root, home, workspace) = test_home_workspace();
    std::fs::create_dir_all(workspace.join("src")).expect("mkdir src");
    std::fs::write(workspace.join("src/main.rs"), "fn main() {}",).expect("write source");
    let _ = std::fs::remove_file(workspace.join(".kissconfig"));
    let marker = workspace.join("kiss_clamp_called.txt");
    let kissconfig = workspace.join(".kissconfig");
    let bin_dir = root.path().join("bin");
    std::fs::create_dir_all(&bin_dir).expect("mkdir bin");
    let kiss = bin_dir.join("kiss");
    std::fs::write(
        &kiss,
        format!(
            "#!/usr/bin/env sh\nprintf 'k\\n' > '{}'\nprintf 'called' > '{}'\n",
            kissconfig.display(),
            marker.display()
        ),
    )
    .expect("write fake kiss");
    let mut perms = std::fs::metadata(&kiss)
        .expect("kiss metadata")
        .permissions();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        perms.set_mode(0o755);
    }
    std::fs::set_permissions(&kiss, perms).expect("chmod kiss");

    let mock = root.path().join("mock-agent-acp-do");
    common::write_mock_executable(&mock, &acp_mock_do_streaming_update_js());
    let out = command_output_with_timeout(
        Command::new(env!("CARGO_BIN_EXE_malvin"))
            .current_dir(&workspace)
            .env("HOME", &home)
            .env(
                "PATH",
                format!(
                    "{}:{}",
                    bin_dir.display(),
                    std::env::var("PATH").unwrap_or_default()
                ),
            )
            .env("CURSOR_AGENT_API_KEY", "test-key")
            .env("MALVIN_AGENT_ACP_BIN", &mock)
            .args(["do", "say hi"]),
        MALVIN_TEST_CMD_TIMEOUT,
    )
    .expect("spawn malvin do");

    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    assert!(marker.exists(), "expected kiss clamp to run");
    assert_eq!(std::fs::read_to_string(&kissconfig).expect("read kissconfig"), "k\n");
}

#[cfg(unix)]
#[test]
fn do_does_not_run_kiss_clamp_when_kissconfig_exists() {
    let (root, home, workspace) = test_home_workspace();
    std::fs::create_dir_all(workspace.join("src")).expect("mkdir src");
    std::fs::write(workspace.join("src/main.rs"), "fn main() {}",).expect("write source");
    let existing = "k\n";
    std::fs::write(workspace.join(".kissconfig"), existing).expect("write kissconfig");
    let marker = workspace.join("kiss_clamp_called.txt");
    let bin_dir = root.path().join("bin");
    std::fs::create_dir_all(&bin_dir).expect("mkdir bin");
    let kiss = bin_dir.join("kiss");
    std::fs::write(&kiss, format!("#!/usr/bin/env sh\nprintf 'bad' > '{}'\nexit 1\n", marker.display()))
        .expect("write fake kiss");
    let mut perms = std::fs::metadata(&kiss)
        .expect("kiss metadata")
        .permissions();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        perms.set_mode(0o755);
    }
    std::fs::set_permissions(&kiss, perms).expect("chmod kiss");

    let mock = root.path().join("mock-agent-acp-do");
    common::write_mock_executable(&mock, &acp_mock_do_streaming_update_js());
    let out = command_output_with_timeout(
        Command::new(env!("CARGO_BIN_EXE_malvin"))
            .current_dir(&workspace)
            .env("HOME", &home)
            .env(
                "PATH",
                format!(
                    "{}:{}",
                    bin_dir.display(),
                    std::env::var("PATH").unwrap_or_default()
                ),
            )
            .env("CURSOR_AGENT_API_KEY", "test-key")
            .env("MALVIN_AGENT_ACP_BIN", &mock)
            .args(["do", "say hi"]),
        MALVIN_TEST_CMD_TIMEOUT,
    )
    .expect("spawn malvin do");

    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    assert!(
        !marker.exists(),
        "did not expect kiss clamp to run when .kissconfig exists"
    );
    assert_eq!(
        std::fs::read_to_string(workspace.join(".kissconfig")).expect("read kissconfig"),
        existing
    );
}

#[cfg(unix)]
#[test]
fn do_wraps_long_raw_agent_line_when_columns_set() {
    let out = run_do_long_text_mock(&[]);
    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    let text_lines = nonempty_stdout_lines(&out.stdout);
    let wrap_lines: Vec<&str> = text_lines
        .iter()
        .map(String::as_str)
        .filter(|l| l.chars().all(|c| c == 'a'))
        .collect();
    assert!(
        wrap_lines.len() > 1,
        "expected word-wrapped stdout (multiple non-empty lines), got {text_lines:?}"
    );
    let joined: String = wrap_lines.iter().copied().collect();
    assert_eq!(joined.len(), 120);
    assert!(joined.chars().all(|c| c == 'a'));
    let col_n: usize = DO_WRAP_COLUMNS.parse().expect("columns");
    assert!(
        wrap_lines.iter().all(|l| l.chars().count() <= col_n),
        "each wrapped segment should fit COLUMNS: {wrap_lines:?}"
    );
    assert!(!String::from_utf8_lossy(&out.stdout).contains("jsonrpc"));
}

#[cfg(unix)]
#[test]
fn do_stdout_includes_thoughts_only_with_flag() {
    let out = run_do_with_mock(&["--thoughts"]);
    assert!(out.status.success(), "malvin do --thoughts failed: {out:?}");
    let stdout = String::from_utf8_lossy(&out.stdout);
    let lines = stdout_lines_preserve_shape(&out.stdout);
    assert!(
        lines.iter().all(|l| !l.contains("do...")),
        "did not expect do stdout chrome, got: {lines:?}"
    );
    assert!(lines.iter().any(|l| l == "agent message"), "got: {lines:?}");
    assert!(
        lines.iter().any(|l| l == "hidden thought"),
        "stdout was {stdout:?}"
    );
    assert!(
        !stdout.contains("[hidden thought]"),
        "stdout was {stdout:?}"
    );
    assert!(
        lines.iter().all(|l| !l.contains(":[<do")),
        "did not expect tagged do stdout lines, got: {lines:?}"
    );
    assert_stdout_has_no_chrome(&lines);
    assert!(stdout.contains("hidden thought"), "stdout was {stdout:?}");
    assert!(!stdout.contains("\"jsonrpc\""), "stdout was {stdout:?}");
}

#[cfg(unix)]
#[test]
fn do_forwards_default_model_and_force_to_agent() {
    let (out, argv) = run_do_with_mock_and_argv(&[]);
    assert!(out.status.success(), "malvin do failed: {out:?}");
    let model_values: Vec<&str> = argv
        .windows(2)
        .filter(|w| w[0] == "--model")
        .map(|w| w[1].as_str())
        .collect();
    assert!(
        model_values == vec![DEFAULT_CLI_MODEL],
        "expected exactly one forwarded --model {DEFAULT_CLI_MODEL}; argv={argv:?}"
    );
    let force_count = argv.iter().filter(|arg| arg.as_str() == "--force").count();
    assert!(
        force_count == 1,
        "expected exactly one forwarded --force by default; argv={argv:?}"
    );
    assert!(
        !argv.iter().any(|arg| arg == "--no-force"),
        "did not expect forwarded --no-force; argv={argv:?}"
    );
}

#[cfg(unix)]
#[test]
fn do_respects_no_force_and_explicit_model_flags() {
    let (out, argv) =
        run_malvin_with_captured_argv(&["--no-force", "--model", "composer-x", "do", "say hi"]);
    assert!(out.status.success(), "malvin do failed: {out:?}");
    let model_values: Vec<&str> = argv
        .windows(2)
        .filter(|w| w[0] == "--model")
        .map(|w| w[1].as_str())
        .collect();
    assert!(
        model_values == vec!["composer-x"],
        "expected exactly one forwarded --model composer-x; argv={argv:?}"
    );
    assert!(
        !argv.iter().any(|arg| arg == "--force"),
        "did not expect --force with --no-force; argv={argv:?}"
    );
    assert!(
        !argv.iter().any(|arg| arg == "--no-force"),
        "did not expect forwarded --no-force; argv={argv:?}"
    );
}

#[cfg(unix)]
#[test]
fn do_wraps_wordy_long_text_at_word_boundaries() {
    let out = run_do_wordy_long_mock(&[]);
    assert!(
        out.status.success(),
        "malvin do failed: {:?}",
        String::from_utf8_lossy(&out.stderr)
    );
    let text_lines = nonempty_stdout_lines(&out.stdout);
    let wrap_lines: Vec<&str> = text_lines
        .iter()
        .map(String::as_str)
        .filter(|l| l.split_whitespace().all(|w| w == "abcdefghij"))
        .collect();
    assert!(
        wrap_lines.len() > 1,
        "expected word-wrapped stdout, got {text_lines:?}"
    );
    let col_n: usize = DO_WRAP_COLUMNS.parse().expect("columns");
    assert!(
        wrap_lines.iter().all(|l| l.chars().count() <= col_n),
        "each wrapped line should fit COLUMNS={col_n}: {wrap_lines:?}"
    );
    let expected_word = "abcdefghij";
    for line in &wrap_lines {
        for word in line.split_whitespace() {
            assert!(
                word == expected_word,
                "word-wrap should not split words; found partial word {word:?} in line {line:?}"
            );
        }
    }
}